/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:49:58,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:49:58,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:49:58,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:49:58,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:49:58,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:49:58,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:49:58,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:49:58,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:49:58,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:49:58,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:49:58,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:49:58,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:49:58,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:49:58,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:49:58,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:49:58,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:49:58,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:49:58,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:49:58,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:49:58,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:49:58,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:49:58,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:49:58,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:49:58,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:49:58,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:49:58,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:49:58,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:49:58,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:49:58,555 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:49:58,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:49:58,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:49:58,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:49:58,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:49:58,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:49:58,557 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:49:58,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:49:58,557 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:49:58,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:49:58,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:49:58,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:49:58,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:49:58,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:49:58,559 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:49:58,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:49:58,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:49:58,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:49:58,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:49:58,740 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:49:58,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-01-28 01:49:59,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:49:59,807 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:49:59,807 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-01-28 01:49:59,814 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2615fb5a7/09af0500d5fe4c55a8557be9eb12b047/FLAG951d281a2 [2023-01-28 01:49:59,824 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2615fb5a7/09af0500d5fe4c55a8557be9eb12b047 [2023-01-28 01:49:59,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:49:59,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:49:59,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:49:59,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:49:59,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:49:59,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:49:59" (1/1) ... [2023-01-28 01:49:59,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c4414b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:49:59, skipping insertion in model container [2023-01-28 01:49:59,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:49:59" (1/1) ... [2023-01-28 01:49:59,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:49:59,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:50:00,080 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-01-28 01:50:00,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:00,109 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:50:00,140 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-01-28 01:50:00,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:00,191 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:50:00,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00 WrapperNode [2023-01-28 01:50:00,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:00,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:00,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:50:00,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:50:00,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,236 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-01-28 01:50:00,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:00,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:50:00,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:50:00,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:50:00,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:50:00,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:50:00,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:50:00,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:50:00,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (1/1) ... [2023-01-28 01:50:00,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:00,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:50:00,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 01:50:00,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 01:50:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:50:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:50:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:50:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:50:00,324 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:50:00,433 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:50:00,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:50:00,566 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:50:00,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:50:00,571 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-28 01:50:00,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:00 BoogieIcfgContainer [2023-01-28 01:50:00,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:50:00,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:50:00,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:50:00,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:50:00,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:49:59" (1/3) ... [2023-01-28 01:50:00,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e954701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:00, skipping insertion in model container [2023-01-28 01:50:00,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:00" (2/3) ... [2023-01-28 01:50:00,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e954701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:00, skipping insertion in model container [2023-01-28 01:50:00,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:00" (3/3) ... [2023-01-28 01:50:00,577 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2023-01-28 01:50:00,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:50:00,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:50:00,588 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:50:00,621 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:50:00,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 102 transitions, 212 flow [2023-01-28 01:50:00,670 INFO L130 PetriNetUnfolder]: 9/101 cut-off events. [2023-01-28 01:50:00,671 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:50:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 9/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-01-28 01:50:00,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 102 transitions, 212 flow [2023-01-28 01:50:00,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 187 flow [2023-01-28 01:50:00,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:00,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 187 flow [2023-01-28 01:50:00,686 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 187 flow [2023-01-28 01:50:00,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 187 flow [2023-01-28 01:50:00,705 INFO L130 PetriNetUnfolder]: 9/92 cut-off events. [2023-01-28 01:50:00,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:00,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-01-28 01:50:00,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-01-28 01:50:03,140 INFO L134 LiptonReduction]: Checked pairs total: 3012 [2023-01-28 01:50:03,140 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-01-28 01:50:03,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 01:50:03,154 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ab4140a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:03,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:50:03,157 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 01:50:03,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:03,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:03,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 01:50:03,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:03,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 360293902, now seen corresponding path program 1 times [2023-01-28 01:50:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962724828] [2023-01-28 01:50:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:50:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962724828] [2023-01-28 01:50:03,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962724828] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 01:50:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127767452] [2023-01-28 01:50:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:50:03,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:50:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:50:03,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 179 [2023-01-28 01:50:03,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:03,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 179 [2023-01-28 01:50:03,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:03,511 INFO L130 PetriNetUnfolder]: 54/144 cut-off events. [2023-01-28 01:50:03,511 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:03,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 144 events. 54/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 512 event pairs, 15 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 273. Up to 75 conditions per place. [2023-01-28 01:50:03,512 INFO L137 encePairwiseOnDemand]: 166/179 looper letters, 13 selfloop transitions, 2 changer transitions 12/28 dead transitions. [2023-01-28 01:50:03,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 111 flow [2023-01-28 01:50:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:50:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:50:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-01-28 01:50:03,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171322160148976 [2023-01-28 01:50:03,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-01-28 01:50:03,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-01-28 01:50:03,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:03,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-01-28 01:50:03,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,530 INFO L175 Difference]: Start difference. First operand has 22 places, 26 transitions, 55 flow. Second operand 3 states and 224 transitions. [2023-01-28 01:50:03,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 111 flow [2023-01-28 01:50:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:50:03,533 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 40 flow [2023-01-28 01:50:03,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-01-28 01:50:03,536 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-01-28 01:50:03,536 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 40 flow [2023-01-28 01:50:03,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:03,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:03,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:50:03,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:03,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 717087026, now seen corresponding path program 1 times [2023-01-28 01:50:03,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:03,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922665890] [2023-01-28 01:50:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:50:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:50:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:50:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922665890] [2023-01-28 01:50:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922665890] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:50:03,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:50:03,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:50:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085107537] [2023-01-28 01:50:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:50:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:50:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:50:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:50:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:50:03,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-01-28 01:50:03,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:50:03,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-01-28 01:50:03,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:50:03,626 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-28 01:50:03,627 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:50:03,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 41 events. 10/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 4 based on Foata normal form. 7/48 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2023-01-28 01:50:03,627 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 10 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-01-28 01:50:03,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 84 flow [2023-01-28 01:50:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:50:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:50:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-01-28 01:50:03,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506517690875233 [2023-01-28 01:50:03,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-01-28 01:50:03,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-01-28 01:50:03,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:50:03,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-01-28 01:50:03,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,632 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 40 flow. Second operand 3 states and 242 transitions. [2023-01-28 01:50:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 84 flow [2023-01-28 01:50:03,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 78 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 01:50:03,633 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 56 flow [2023-01-28 01:50:03,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-01-28 01:50:03,633 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-01-28 01:50:03,633 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 56 flow [2023-01-28 01:50:03,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:50:03,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:03,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:03,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:50:03,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:03,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 755391486, now seen corresponding path program 1 times [2023-01-28 01:50:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531621092] [2023-01-28 01:50:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:03,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:03,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:03,668 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:03,669 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 01:50:03,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:50:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:50:03,670 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-01-28 01:50:03,673 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 01:50:03,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 01:50:03,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:50:03 BasicIcfg [2023-01-28 01:50:03,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 01:50:03,689 INFO L158 Benchmark]: Toolchain (without parser) took 3862.02ms. Allocated memory was 333.4MB in the beginning and 404.8MB in the end (delta: 71.3MB). Free memory was 281.9MB in the beginning and 274.1MB in the end (delta: 7.8MB). Peak memory consumption was 80.6MB. Max. memory is 16.0GB. [2023-01-28 01:50:03,689 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:50:03,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.63ms. Allocated memory is still 333.4MB. Free memory was 281.6MB in the beginning and 308.2MB in the end (delta: -26.6MB). Peak memory consumption was 24.5MB. Max. memory is 16.0GB. [2023-01-28 01:50:03,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 333.4MB. Free memory was 308.2MB in the beginning and 306.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:50:03,690 INFO L158 Benchmark]: Boogie Preprocessor took 26.76ms. Allocated memory is still 333.4MB. Free memory was 306.1MB in the beginning and 304.4MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 01:50:03,690 INFO L158 Benchmark]: RCFGBuilder took 307.93ms. Allocated memory is still 333.4MB. Free memory was 304.4MB in the beginning and 289.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 01:50:03,691 INFO L158 Benchmark]: TraceAbstraction took 3115.29ms. Allocated memory was 333.4MB in the beginning and 404.8MB in the end (delta: 71.3MB). Free memory was 289.4MB in the beginning and 274.1MB in the end (delta: 15.2MB). Peak memory consumption was 87.6MB. Max. memory is 16.0GB. [2023-01-28 01:50:03,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 362.63ms. Allocated memory is still 333.4MB. Free memory was 281.6MB in the beginning and 308.2MB in the end (delta: -26.6MB). Peak memory consumption was 24.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 333.4MB. Free memory was 308.2MB in the beginning and 306.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 26.76ms. Allocated memory is still 333.4MB. Free memory was 306.1MB in the beginning and 304.4MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 307.93ms. Allocated memory is still 333.4MB. Free memory was 304.4MB in the beginning and 289.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3115.29ms. Allocated memory was 333.4MB in the beginning and 404.8MB in the end (delta: 71.3MB). Free memory was 289.4MB in the beginning and 274.1MB in the end (delta: 15.2MB). Peak memory consumption was 87.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 87 PlacesBefore, 22 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 3012 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1298, independent: 1150, independent conditional: 0, independent unconditional: 1150, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 799, independent: 763, independent conditional: 0, independent unconditional: 763, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1298, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 799, unknown conditional: 0, unknown unconditional: 799] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 0; [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={6:0}, i={6:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={6:0}] - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 123 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 01:50:03,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...